One characteristic feature of tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a layer of permanently frozen subsoil. This characteristic is known as

The appropriate answer is "Permafrost ".

Explanation:

Permafrost seems to be similar to other types of soil as well as the rock that has been managed to hold together with some ice.

the influence of daoism, buddhism, and legalism on chinese culture. unlike confucianism, daoism looked to nature rather than human beings as the source of morality. according to laozi, human society has to conform to the dao (the way), or the essential unifying element of all that is. some interpret dao as nature.

wood carving remains today the primary sculptural art form of the sub saharan continent. african art history shows the earliest wooden sculptures from the 17th c are attributed to the kuba, central zaire but the earliest surviving sub-saharan sculpture is a zoomorphic head found in 1928 in central angola.

i hope this .